Description
An OS command injection vulnerability exists in various legacy D-Link routers—including DIR-300 rev B and DIR-600 (firmware ≤ 2.13 and ≤ 2.14b01, respectively)—due to improper input handling in the unauthenticated command.php endpoint. By sending specially crafted POST requests, a remote attacker can execute arbitrary shell commands with root privileges, allowing full takeover of the device. This includes launching services such as Telnet, exfiltrating credentials, modifying system configuration, and disrupting availability. The flaw stems from the lack of authentication and inadequate sanitation of the cmd parameter.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
D-Link DIR-600
Default version status: unknown
0 to ≤ 2.14b01affected
D-Link DIR-300
Default version status: unknown
0 to ≤ 2.13affected
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/dlink_command_php_exec_noauth.rb ↗
- https://www.exploit-db.com/exploits/24453 ↗
- https://www.exploit-db.com/exploits/27528 ↗
- https://web.archive.org/web/20131022221648/http://www.s3cur1ty.de/m1adv2013-003 ↗
- https://www.vulncheck.com/advisories/d-link-legacy-unauth-rce ↗